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Oracle database 10g:Administration I Sample Questions:

1. You work in a data warehouse environment that involves the execution of complex queries. The current content of the SQL cache holds the ideal workload for analysis. You want to analyze only few most resource-intensive statements. What would be your suggestion to receive recommendations on the efficient use of indexes and materialized views to improve query performance?

A) Run the Automatic Workload Repository (AWR) report.
B) Run the SQL Tuning Advisor (STA).
C) Run the Automatic Database Diagnostic Monitor (ADDM).
D) Run the SQL Access Advisor.

2. User Scott has updated the salary of one of the employees in the EMPLOYEES table and has not committed the transaction. What are the two types of locks that this scenario would lead to? (Choose two.)

A) exclusive table-level lock for the table containing the row
B) ROW EXCLUSIVE lock for the row being updated
C) shared row-exclusive lock for the row being updated
D) null lock on the table containing the row
E) null lock on the row being updated
F) a shareable table lock for the table containing the row
G) ROW SHARE lock for the row being updated

3. The junior DBA in your organization has accidentally deleted the alert log file. What will you do to create new alert log file?

A) No action required.The file would be created automatically by the instance.
B) Create the new text file file as ALERT.LOG.
C) Change the value for the BACKGROUND_DUMP_DEST parameter.
D) You have to recover the alert log file from the valid backup.

4. Data files of which three tablespaces can be recovered by performing an open recovery? (Choose three.)

A) INDEX
B) UNDO
C) TEMP
D) SYSTEM
E) SYSAUX

5. View the Exhibit and analyze the CREATE TABLE statements used to create the ITEMS and ORDERS tables.
The ITEMS table has 50 rows and ORDERS table has 500 rows. Because you decide to not deal with the item code 188 in future, you execute the following command to remove the item:
SQL> DELETE FROM items WHERE item_code=188;
What is the effect of this command?

A) The command fails with integrity violation error.
B) The row containing the value 188 corresponding to the ITEM_CODE column is deleted from the ITEMS table, and the dependent rows in the ORDERS table are populated with
NULL values in their ITEM_CODE columns.
C) The row containing the value 188 corresponding to the ITEM_CODE column is deleted from the ITEMS table, and the dependent rows in the ORDERS table are also deleted automatically.
D) The row containing the value 188 corresponding to the ITEM_CODE column is deleted from the ITEMS table, and the foreign key constraint is disabled in the ORDERS table.

Solutions: